diff options
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/Makefile | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/gvt.c | 9 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/gvt.h | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/handlers.c | 27 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/sched_policy.c | 291 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/sched_policy.h | 58 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/scheduler.h | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/vgpu.c | 14 |
8 files changed, 402 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/gvt/Makefile b/drivers/gpu/drm/i915/gvt/Makefile index 2d1a5c3..21000b1 100644 --- a/drivers/gpu/drm/i915/gvt/Makefile +++ b/drivers/gpu/drm/i915/gvt/Makefile @@ -1,7 +1,7 @@ GVT_DIR := gvt GVT_SOURCE := gvt.o aperture_gm.o handlers.o vgpu.o trace_points.o firmware.o \ interrupt.o gtt.o cfg_space.o opregion.o mmio.o display.o edid.o \ - execlist.o scheduler.o + execlist.o scheduler.o sched_policy.o ccflags-y += -I$(src) -I$(src)/$(GVT_DIR) -Wall i915-y += $(addprefix $(GVT_DIR)/, $(GVT_SOURCE)) diff --git a/drivers/gpu/drm/i915/gvt/gvt.c b/drivers/gpu/drm/i915/gvt/gvt.c index 5bf8488..7f13efb 100644 --- a/drivers/gpu/drm/i915/gvt/gvt.c +++ b/drivers/gpu/drm/i915/gvt/gvt.c @@ -177,6 +177,7 @@ void intel_gvt_clean_device(struct drm_i915_private *dev_priv) return; clean_service_thread(gvt); + intel_gvt_clean_sched_policy(gvt); intel_gvt_clean_workload_scheduler(gvt); intel_gvt_clean_opregion(gvt); intel_gvt_clean_gtt(gvt); @@ -244,14 +245,20 @@ int intel_gvt_init_device(struct drm_i915_private *dev_priv) if (ret) goto out_clean_opregion; - ret = init_service_thread(gvt); + ret = intel_gvt_init_sched_policy(gvt); if (ret) goto out_clean_workload_scheduler; + ret = init_service_thread(gvt); + if (ret) + goto out_clean_sched_policy; + gvt_dbg_core("gvt device creation is done\n"); gvt->initialized = true; return 0; +out_clean_sched_policy: + intel_gvt_clean_sched_policy(gvt); out_clean_workload_scheduler: intel_gvt_clean_workload_scheduler(gvt); out_clean_opregion: diff --git a/drivers/gpu/drm/i915/gvt/gvt.h b/drivers/gpu/drm/i915/gvt/gvt.h index ae716cf..6d37468 100644 --- a/drivers/gpu/drm/i915/gvt/gvt.h +++ b/drivers/gpu/drm/i915/gvt/gvt.h @@ -43,6 +43,7 @@ #include "edid.h" #include "execlist.h" #include "scheduler.h" +#include "sched_policy.h" #define GVT_MAX_VGPU 8 @@ -139,6 +140,7 @@ struct intel_vgpu { unsigned long handle; /* vGPU handle used by hypervisor MPT modules */ bool active; bool resetting; + void *sched_data; struct intel_vgpu_fence fence; struct intel_vgpu_gm gm; diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c index 04da35c..8e8bda5 100644 --- a/drivers/gpu/drm/i915/gvt/handlers.c +++ b/drivers/gpu/drm/i915/gvt/handlers.c @@ -235,6 +235,7 @@ static int handle_device_reset(struct intel_vgpu *vgpu, unsigned int offset, vgpu->resetting = true; + intel_vgpu_stop_schedule(vgpu); if (scheduler->current_vgpu == vgpu) { mutex_unlock(&vgpu->gvt->lock); intel_gvt_wait_vgpu_idle(vgpu); @@ -1317,6 +1318,28 @@ static int elsp_mmio_write(struct intel_vgpu *vgpu, unsigned int offset, return 0; } +static int ring_mode_mmio_write(struct intel_vgpu *vgpu, unsigned int offset, + void *p_data, unsigned int bytes) +{ + u32 data = *(u32 *)p_data; + int ring_id = render_mmio_to_ring_id(vgpu->gvt, offset); + bool enable_execlist; + + write_vreg(vgpu, offset, p_data, bytes); + if ((data & _MASKED_BIT_ENABLE(GFX_RUN_LIST_ENABLE)) + || (data & _MASKED_BIT_DISABLE(GFX_RUN_LIST_ENABLE))) { + enable_execlist = !!(data & GFX_RUN_LIST_ENABLE); + + gvt_dbg_core("EXECLIST %s on ring %d\n", + (enable_execlist ? "enabling" : "disabling"), + ring_id); + + if (enable_execlist) + intel_vgpu_start_schedule(vgpu); + } + return 0; +} + #define MMIO_F(reg, s, f, am, rm, d, r, w) do { \ ret = new_mmio_info(gvt, INTEL_GVT_MMIO_OFFSET(reg), \ f, s, am, rm, d, r, w); \ @@ -1398,7 +1421,7 @@ static int init_generic_mmio_info(struct intel_gvt *gvt) /* RING MODE */ #define RING_REG(base) (base + 0x29c) - MMIO_RING_DFH(RING_REG, D_ALL, F_MODE_MASK, NULL, NULL); + MMIO_RING_DFH(RING_REG, D_ALL, F_MODE_MASK, NULL, ring_mode_mmio_write); #undef RING_REG MMIO_RING_DFH(RING_MI_MODE, D_ALL, F_MODE_MASK, NULL, NULL); @@ -2213,7 +2236,7 @@ static int init_broadwell_mmio_info(struct intel_gvt *gvt) MMIO_D(RING_CTL(GEN8_BSD2_RING_BASE), D_BDW_PLUS); MMIO_D(RING_ACTHD(GEN8_BSD2_RING_BASE), D_BDW_PLUS); MMIO_D(RING_ACTHD_UDW(GEN8_BSD2_RING_BASE), D_BDW_PLUS); - MMIO_DFH(0x1c29c, D_BDW_PLUS, F_MODE_MASK, NULL, NULL); + MMIO_DFH(0x1c29c, D_BDW_PLUS, F_MODE_MASK, NULL, ring_mode_mmio_write); MMIO_DFH(RING_MI_MODE(GEN8_BSD2_RING_BASE), D_BDW_PLUS, F_MODE_MASK, NULL, NULL); MMIO_DFH(RING_INSTPM(GEN8_BSD2_RING_BASE), D_BDW_PLUS, F_MODE_MASK, diff --git a/drivers/gpu/drm/i915/gvt/sched_policy.c b/drivers/gpu/drm/i915/gvt/sched_policy.c new file mode 100644 index 0000000..c607354 --- /dev/null +++ b/drivers/gpu/drm/i915/gvt/sched_policy.c @@ -0,0 +1,291 @@ +/* + * Copyright(c) 2011-2016 Intel Corporation. All rights reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + * Authors: + * Anhua Xu + * Kevin Tian <kevin.tian@intel.com> + * + * Contributors: + * Min He <min.he@intel.com> + * Bing Niu <bing.niu@intel.com> + * Zhi Wang <zhi.a.wang@intel.com> + * + */ + +#include "i915_drv.h" + +static bool vgpu_has_pending_workload(struct intel_vgpu *vgpu) +{ + struct intel_vgpu_execlist *execlist; + int i; + + for (i = 0; i < I915_NUM_ENGINES; i++) { + execlist = &vgpu->execlist[i]; + if (!list_empty(workload_q_head(vgpu, i))) + return true; + } + + return false; +} + +static void try_to_schedule_next_vgpu(struct intel_gvt *gvt) +{ + struct intel_gvt_workload_scheduler *scheduler = &gvt->scheduler; + int i; + + /* no target to schedule */ + if (!scheduler->next_vgpu) + return; + + gvt_dbg_sched("try to schedule next vgpu %d\n", + scheduler->next_vgpu->id); + + /* + * after the flag is set, workload dispatch thread will + * stop dispatching workload for current vgpu + */ + scheduler->need_reschedule = true; + + /* still have uncompleted workload? */ + for (i = 0; i < I915_NUM_ENGINES; i++) { + if (scheduler->current_workload[i]) { + gvt_dbg_sched("still have running workload\n"); + return; + } + } + + gvt_dbg_sched("switch to next vgpu %d\n", + scheduler->next_vgpu->id); + + /* switch current vgpu */ + scheduler->current_vgpu = scheduler->next_vgpu; + scheduler->next_vgpu = NULL; + + scheduler->need_reschedule = false; + + /* wake up workload dispatch thread */ + for (i = 0; i < I915_NUM_ENGINES; i++) + wake_up(&scheduler->waitq[i]); +} + +struct tbs_vgpu_data { + struct list_head list; + struct intel_vgpu *vgpu; + /* put some per-vgpu sched stats here */ +}; + +struct tbs_sched_data { + struct intel_gvt *gvt; + struct delayed_work work; + unsigned long period; + struct list_head runq_head; +}; + +#define GVT_DEFAULT_TIME_SLICE (1 * HZ / 1000) + +static void tbs_sched_func(struct work_struct *work) +{ + struct tbs_sched_data *sched_data = container_of(work, + struct tbs_sched_data, work.work); + struct tbs_vgpu_data *vgpu_data; + + struct intel_gvt *gvt = sched_data->gvt; + struct intel_gvt_workload_scheduler *scheduler = &gvt->scheduler; + + struct intel_vgpu *vgpu = NULL; + struct list_head *pos, *head; + + mutex_lock(&gvt->lock); + + /* no vgpu or has already had a target */ + if (list_empty(&sched_data->runq_head) || scheduler->next_vgpu) + goto out; + + if (scheduler->current_vgpu) { + vgpu_data = scheduler->current_vgpu->sched_data; + head = &vgpu_data->list; + } else { + gvt_dbg_sched("no current vgpu search from q head\n"); + head = &sched_data->runq_head; + } + + /* search a vgpu with pending workload */ + list_for_each(pos, head) { + if (pos == &sched_data->runq_head) + continue; + + vgpu_data = container_of(pos, struct tbs_vgpu_data, list); + if (!vgpu_has_pending_workload(vgpu_data->vgpu)) + continue; + + vgpu = vgpu_data->vgpu; + break; + } + + if (vgpu) { + scheduler->next_vgpu = vgpu; + gvt_dbg_sched("pick next vgpu %d\n", vgpu->id); + } +out: + if (scheduler->next_vgpu) { + gvt_dbg_sched("try to schedule next vgpu %d\n", + scheduler->next_vgpu->id); + try_to_schedule_next_vgpu(gvt); + } + + /* + * still have vgpu on runq + * or last schedule haven't finished due to running workload + */ + if (!list_empty(&sched_data->runq_head) || scheduler->next_vgpu) + schedule_delayed_work(&sched_data->work, sched_data->period); + + mutex_unlock(&gvt->lock); +} + +static int tbs_sched_init(struct intel_gvt *gvt) +{ + struct intel_gvt_workload_scheduler *scheduler = + &gvt->scheduler; + + struct tbs_sched_data *data; + + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + INIT_LIST_HEAD(&data->runq_head); + INIT_DELAYED_WORK(&data->work, tbs_sched_func); + data->period = GVT_DEFAULT_TIME_SLICE; + data->gvt = gvt; + + scheduler->sched_data = data; + return 0; +} + +static void tbs_sched_clean(struct intel_gvt *gvt) +{ + struct intel_gvt_workload_scheduler *scheduler = + &gvt->scheduler; + struct tbs_sched_data *data = scheduler->sched_data; + + cancel_delayed_work(&data->work); + kfree(data); + scheduler->sched_data = NULL; +} + +static int tbs_sched_init_vgpu(struct intel_vgpu *vgpu) +{ + struct tbs_vgpu_data *data; + + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->vgpu = vgpu; + INIT_LIST_HEAD(&data->list); + + vgpu->sched_data = data; + return 0; +} + +static void tbs_sched_clean_vgpu(struct intel_vgpu *vgpu) +{ + kfree(vgpu->sched_data); + vgpu->sched_data = NULL; +} + +static void tbs_sched_start_schedule(struct intel_vgpu *vgpu) +{ + struct tbs_sched_data *sched_data = vgpu->gvt->scheduler.sched_data; + struct tbs_vgpu_data *vgpu_data = vgpu->sched_data; + + if (!list_empty(&vgpu_data->list)) + return; + + list_add_tail(&vgpu_data->list, &sched_data->runq_head); + schedule_delayed_work(&sched_data->work, sched_data->period); +} + +static void tbs_sched_stop_schedule(struct intel_vgpu *vgpu) +{ + struct tbs_vgpu_data *vgpu_data = vgpu->sched_data; + + list_del_init(&vgpu_data->list); +} + +struct intel_gvt_sched_policy_ops tbs_schedule_ops = { + .init = tbs_sched_init, + .clean = tbs_sched_clean, + .init_vgpu = tbs_sched_init_vgpu, + .clean_vgpu = tbs_sched_clean_vgpu, + .start_schedule = tbs_sched_start_schedule, + .stop_schedule = tbs_sched_stop_schedule, +}; + +int intel_gvt_init_sched_policy(struct intel_gvt *gvt) +{ + gvt->scheduler.sched_ops = &tbs_schedule_ops; + + return gvt->scheduler.sched_ops->init(gvt); +} + +void intel_gvt_clean_sched_policy(struct intel_gvt *gvt) +{ + gvt->scheduler.sched_ops->clean(gvt); +} + +int intel_vgpu_init_sched_policy(struct intel_vgpu *vgpu) +{ + return vgpu->gvt->scheduler.sched_ops->init_vgpu(vgpu); +} + +void intel_vgpu_clean_sched_policy(struct intel_vgpu *vgpu) +{ + vgpu->gvt->scheduler.sched_ops->clean_vgpu(vgpu); +} + +void intel_vgpu_start_schedule(struct intel_vgpu *vgpu) +{ + gvt_dbg_core("vgpu%d: start schedule\n", vgpu->id); + + vgpu->gvt->scheduler.sched_ops->start_schedule(vgpu); +} + +void intel_vgpu_stop_schedule(struct intel_vgpu *vgpu) +{ + struct intel_gvt_workload_scheduler *scheduler = + &vgpu->gvt->scheduler; + + gvt_dbg_core("vgpu%d: stop schedule\n", vgpu->id); + + scheduler->sched_ops->stop_schedule(vgpu); + + if (scheduler->next_vgpu == vgpu) + scheduler->next_vgpu = NULL; + + if (scheduler->current_vgpu == vgpu) { + /* stop workload dispatching */ + scheduler->need_reschedule = true; + scheduler->current_vgpu = NULL; + } +} diff --git a/drivers/gpu/drm/i915/gvt/sched_policy.h b/drivers/gpu/drm/i915/gvt/sched_policy.h new file mode 100644 index 0000000..bb8b909 --- /dev/null +++ b/drivers/gpu/drm/i915/gvt/sched_policy.h @@ -0,0 +1,58 @@ +/* + * Copyright(c) 2011-2016 Intel Corporation. All rights reserved. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice (including the next + * paragraph) shall be included in all copies or substantial portions of the + * Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + * Authors: + * Anhua Xu + * Kevin Tian <kevin.tian@intel.com> + * + * Contributors: + * Min He <min.he@intel.com> + * Bing Niu <bing.niu@intel.com> + * Zhi Wang <zhi.a.wang@intel.com> + * + */ + +#ifndef __GVT_SCHED_POLICY__ +#define __GVT_SCHED_POLICY__ + +struct intel_gvt_sched_policy_ops { + int (*init)(struct intel_gvt *gvt); + void (*clean)(struct intel_gvt *gvt); + int (*init_vgpu)(struct intel_vgpu *vgpu); + void (*clean_vgpu)(struct intel_vgpu *vgpu); + void (*start_schedule)(struct intel_vgpu *vgpu); + void (*stop_schedule)(struct intel_vgpu *vgpu); +}; + +int intel_gvt_init_sched_policy(struct intel_gvt *gvt); + +void intel_gvt_clean_sched_policy(struct intel_gvt *gvt); + +int intel_vgpu_init_sched_policy(struct intel_vgpu *vgpu); + +void intel_vgpu_clean_sched_policy(struct intel_vgpu *vgpu); + +void intel_vgpu_start_schedule(struct intel_vgpu *vgpu); + +void intel_vgpu_stop_schedule(struct intel_vgpu *vgpu); + +#endif diff --git a/drivers/gpu/drm/i915/gvt/scheduler.h b/drivers/gpu/drm/i915/gvt/scheduler.h index 9206cc0..2500438 100644 --- a/drivers/gpu/drm/i915/gvt/scheduler.h +++ b/drivers/gpu/drm/i915/gvt/scheduler.h @@ -45,6 +45,9 @@ struct intel_gvt_workload_scheduler { wait_queue_head_t workload_complete_wq; struct task_struct *thread[I915_NUM_ENGINES]; wait_queue_head_t waitq[I915_NUM_ENGINES]; + + void *sched_data; + struct intel_gvt_sched_policy_ops *sched_ops; }; struct intel_vgpu_workload { diff --git a/drivers/gpu/drm/i915/gvt/vgpu.c b/drivers/gpu/drm/i915/gvt/vgpu.c index 609ec55..c9b8e18 100644 --- a/drivers/gpu/drm/i915/gvt/vgpu.c +++ b/drivers/gpu/drm/i915/gvt/vgpu.c @@ -146,6 +146,14 @@ void intel_gvt_destroy_vgpu(struct intel_vgpu *vgpu) vgpu->active = false; idr_remove(&gvt->vgpu_idr, vgpu->id); + if (atomic_read(&vgpu->running_workload_num)) { + mutex_unlock(&gvt->lock); + intel_gvt_wait_vgpu_idle(vgpu); + mutex_lock(&gvt->lock); + } + + intel_vgpu_stop_schedule(vgpu); + intel_vgpu_clean_sched_policy(vgpu); intel_vgpu_clean_gvt_context(vgpu); intel_vgpu_clean_execlist(vgpu); intel_vgpu_clean_display(vgpu); @@ -231,11 +239,17 @@ struct intel_vgpu *intel_gvt_create_vgpu(struct intel_gvt *gvt, if (ret) goto out_clean_execlist; + ret = intel_vgpu_init_sched_policy(vgpu); + if (ret) + goto out_clean_shadow_ctx; + vgpu->active = true; mutex_unlock(&gvt->lock); return vgpu; +out_clean_shadow_ctx: + intel_vgpu_clean_gvt_context(vgpu); out_clean_execlist: intel_vgpu_clean_execlist(vgpu); out_clean_display: |
